1. A red, bruise-like mark left by gently sucking or biting on someone's skin while kissing it. I was so embarrassed when I realized that the woman I had hooked up with left hickeys all over my neck. Hey, I have an important meeting in the morning—don't go leaving a hickey where everyone can see it!

2. A pimple. A: "Ugh, I can't believe I've got a huge hickey on my nose right before prom." B: "You better go to the store for some zit cream like yesterday!"